US3608181A - Fabrication of panel walls - Google Patents

Fabrication of panel walls Download PDF

Info

Publication number
US3608181A
US3608181A US877714A US87771469A US3608181A US 3608181 A US3608181 A US 3608181A US 877714 A US877714 A US 877714A US 87771469 A US87771469 A US 87771469A US 3608181 A US3608181 A US 3608181A
Authority
US
United States
Prior art keywords
webs
abutting
tubes
panels
tube
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US877714A
Other languages
English (en)
Inventor
Nicholas G Popov
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE759112D priority Critical patent/BE759112A/fr
Application filed by Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Priority to US877714A priority patent/US3608181A/en
Priority to JP45083513A priority patent/JPS4936445B1/ja
Priority to ES385617A priority patent/ES385617A1/es
Priority to FI703089A priority patent/FI50738C/fi
Priority to FR7041102A priority patent/FR2069531A5/fr
Priority to DK584470AA priority patent/DK127582B/da
Priority to SE7015546A priority patent/SE360455C/xx
Priority to NL7016887A priority patent/NL7016887A/xx
Priority to GB5473770A priority patent/GB1329423A/en
Application granted granted Critical
Publication of US3608181A publication Critical patent/US3608181A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/0026—Arc welding or cutting specially adapted for particular articles or work
    • B23K9/0052—Welding of pipe panels
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
    • B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/16—Arc welding or cutting making use of shielding gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K9/00—Arc welding or cutting
    • B23K9/23—Arc welding or cutting taking account of the properties of the materials to be welded
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/101—Tubes having fins or ribs
    • F22B37/102—Walls built-up from finned tubes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
    • F22B37/00—Component parts or details of steam boilers
    • F22B37/02—Component parts or details of steam boilers applicable to more than one kind or type of steam boiler
    • F22B37/10—Water tubes; Accessories therefor
    • F22B37/104—Connection of tubes one with the other or with collectors, drums or distributors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23M—CASINGS, LININGS, WALLS OR DOORS SPECIALLY ADAPTED FOR COMBUSTION CHAMBERS, e.g. FIREBRIDGES; DEVICES FOR DEFLECTING AIR, FLAMES OR COMBUSTION PRODUCTS IN COMBUSTION CHAMBERS; SAFETY ARRANGEMENTS SPECIALLY ADAPTED FOR COMBUSTION APPARATUS; DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR
    • F23M5/00—Casings; Linings; Walls
    • F23M5/08—Cooling thereof; Tube walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/001—Turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/06—Tubes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2101/00—Articles made by soldering, welding or cutting
    • B23K2101/04—Tubular or hollow articles
    • B23K2101/14—Heat exchangers

Definitions

  • a method of joining two tube panels each including parallel, laterally adjacent tubes having their intertube spaces closed by metallic webs comprising, providing at one end of one of the tube panels notches in the Webs extending to the associated tube ends, positioning the notched end of the panel in abutting planar relationship with the second panel so that corresponding tubes of the panels are in coaxial relation and corresponding webs are in opposing relation to form access openings for circumferential welding of the abutting tube ends, welding the abutting tube ends together circumferentially about the junction of the abutting tubes, and seal welding the ends of the corresponding webs to one another including closing the access openings with a metallic filler material.
  • the present invention relates to the fabrication and installation of water cooled walls of high capacity steam generators and more particularly to an improved procedure for joining the tubular elements of a superjacent section of a membrane wall to the tubular elements of an axially aligned subjacent membrane wall section during field erection.
  • furnace walls When furnace walls are larger in their overall dimensions than fabrication or shipping capabilities can accommodate, they are prefabricated in multiple panel sections for assembly by welding into unitary structures at the construction site.
  • the panels comprise parallel, laterally adjacent tubes having their intertube spaces closed by metallic membranes or webs welded to next adjacent tubes, and thus it becomes necessary to prefabricate the panels so that they can be easily positioned in end abutting relationship with the tubes of the upper and lower panels axially aligned and so that they can be quickly and effectively butt welded together, to form a gas tight enclosing wall with the abutting tubes providing a continuout flow path for containing and conducting fluid at high temperature and pressure.
  • tubular panels have been formed and butt welded to one another at the panel ends utilizing one of two methods.
  • the webs and tubes, in planar panel sections are butt welded together by a continuous weld across both sides of the junction between the abutting panel sections. This method is described in US. Pat. 3,154,666.
  • the webs and tubes of each individual panel are fully welded together into a planar panel section except for short end portions of the webs which are bent out of the plane of the panel.
  • 'Ihbe ends of the adjoining tube panels are placed in abutting relationship; and the abutting tube ends are aligned and then welded together by circumferential welds.
  • the bent, unwelded web ends are restored to their original position in the plane of the panels, and are welded to their adjoining tubes and also to one another, end to end, in order to close the gap between tubes.
  • the present invention provides an improved tube 'ice panel and method for butt welding same.
  • the method comprises:
  • the present method is superior to the first of the prior methods mentioned because it provides for circumferential welding of each of the individual abutting tubes, a welding method preferred to the continuous type welding method because of the absolute necessity for tube weld integrity. It is superior to the second method in that it requires less time to complete the joining operation, as it is not necessary to manipulate the web end portions and does not require field welding the end portions of the webs to adjoining tubes.
  • FIG. 1 is a fragmentary view of vertically aligned abut ting tube panels illustrating a preferred panel construction in accordance with this invention where the tube to t-ube side spacing is relatively narrow, as in the case of furnace walls.
  • FIG. 2 is also a fragmentary view of vertically aligned abutting tube panels illustrating a preferred panel construction in accordance with this invention where the tube spacing is relatively wide as in the case of convection pass walls.
  • FIG. 1 Shown in FIG. 1 as a portion of a rigid, gas impervious, pressure resistant furnace wall are fragments of vertically aligned upper and lower tube panels 10 and 12, each comprising parallel, laterally adjacent tubes 14, with metallic Webs or membranes 16 filling the spaces between and welded to next adjacent tubes.
  • notches extending to the ends of associated tubes 14, are formed at the ends of the webs 16. Being so positioned, the notches 18 permit access to the entire periphery of the tubes 14, at the tube ends.
  • notches 18 must be of a size, such that when the panels 10 and 12 are positioned in the abutting relationship shown in the drawing, the access openings 20, formed by and at the junction of the webs 16, are sufliciently large to permit circumferential welding of the axially aligned abutting tubes 14 to one another. If the tube ends are beveled, as at 22, it may not be necessary to notch both panels in order that the access opening 20 be of sufficient size to permit circumferential welding of tube ends. While there is no maximum limitation as to the size of the notches 18, it is practicable to make them no larger than required, since this will aid in the subsequent filling of access openings 20 with metallic material.
  • the notches 18 are illustrated as V-like indentations, this shape is not essential; they may be any shape which will form a suitable access opening for welding of the tubes when the panels are positioned in an abutting relationship. Moreover, the notches may be formed by any suitable means, being formed either prior to, during, or subsequent to panel fabrication.
  • the notched ends of the panels and 12 are positioned as shown in the drawing in an abutting relationship so that corresponding tubes 14 of the panels are in coaxial relation and the corresponding webs 16 and notches 18 thereof are in opposing relation to form access openings 20, and the abutting tubes 14 are circumferentially welded to one another. Because it may not always be possible to fabricate the panels 10 and 12 so that the abutting tubes exactly align, it may in some instances be necessary to split some of the Webs 16 lengthwise for a short distance to permit correction for slight misalignment. If these splits are required, they may be made along the axis of the webs 16 with a torch. By making the splits in this manner, it Will not be necessary to make any tube to web Welds. These splits may be seal Welded at the same time the access openings 20 are filled.
  • the circumferential welding of abutting tubes 14 may be carried out in any suitable manner, however, it has been found desirable to make a heliarc welding pass, followed by electric arc welding to complete the Welds, the welds being made in adjoining pairs of abutting tubes by two welders working as a team, one on the inside and the other on the outside of the wall.
  • the welds may be inspected and the tubes 14 hydrostatically or otherwise tested. If any rewelding is required, it may be done at this time.
  • the final step in completing the butt welding of the panels 10 and 12 is the seal welding of the webs 16. This includes the filling of the access openings 20 and also the welding of any splits if such were necessary to facilitate alignment of the tubes 14. Assuming the notches 18 were made no larger than required, the access openings 20 may generally be filled by simply seal welding; if necessary however, a backing plate or an insert may be used.
  • the end of the webs 116 between the two notches A and 1 20B may if desired be beveled as at 124.
  • Aligning and welding of the abutting tubes 114 is performed in the same general manner as previously described.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Combustion & Propulsion (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
US877714A 1969-11-18 1969-11-18 Fabrication of panel walls Expired - Lifetime US3608181A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
BE759112D BE759112A (fr) 1969-11-18 Perfectionnements aux ecrans de tubes
US877714A US3608181A (en) 1969-11-18 1969-11-18 Fabrication of panel walls
JP45083513A JPS4936445B1 (fr) 1969-11-18 1970-09-25
ES385617A ES385617A1 (es) 1969-11-18 1970-11-04 Perfeccionamientos en los metodos para soldar a tope un parde paneles de tubos.
FI703089A FI50738C (fi) 1969-11-18 1970-11-17 Putkiseinämiä koskevia parannuksia.
FR7041102A FR2069531A5 (fr) 1969-11-18 1970-11-17
DK584470AA DK127582B (da) 1969-11-18 1970-11-17 Fremgangsmåde til fremstilling af en rørvæg.
SE7015546A SE360455C (fr) 1969-11-18 1970-11-17
NL7016887A NL7016887A (fr) 1969-11-18 1970-11-18
GB5473770A GB1329423A (en) 1969-11-18 1970-11-18 Tube walls

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US877714A US3608181A (en) 1969-11-18 1969-11-18 Fabrication of panel walls

Publications (1)

Publication Number Publication Date
US3608181A true US3608181A (en) 1971-09-28

Family

ID=25370569

Family Applications (1)

Application Number Title Priority Date Filing Date
US877714A Expired - Lifetime US3608181A (en) 1969-11-18 1969-11-18 Fabrication of panel walls

Country Status (10)

Country Link
US (1) US3608181A (fr)
JP (1) JPS4936445B1 (fr)
BE (1) BE759112A (fr)
DK (1) DK127582B (fr)
ES (1) ES385617A1 (fr)
FI (1) FI50738C (fr)
FR (1) FR2069531A5 (fr)
GB (1) GB1329423A (fr)
NL (1) NL7016887A (fr)
SE (1) SE360455C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047659A (en) * 1976-01-02 1977-09-13 United States Steel Corporation Method for replacing worn tubes in a gas hood
EP1429073A1 (fr) * 2002-12-02 2004-06-16 Siemens Aktiengesellschaft Procédé de fabrication d'un générateur de vapeur à passage unique et le générateur de vapeur à passage unique

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2522881B (en) 2014-02-07 2018-05-09 Rolls Royce Power Eng Plc Steam generator

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4047659A (en) * 1976-01-02 1977-09-13 United States Steel Corporation Method for replacing worn tubes in a gas hood
EP1429073A1 (fr) * 2002-12-02 2004-06-16 Siemens Aktiengesellschaft Procédé de fabrication d'un générateur de vapeur à passage unique et le générateur de vapeur à passage unique
WO2004051142A1 (fr) * 2002-12-02 2004-06-17 Siemens Aktiengesellschaft Procede de fabrication d'un generateur de vapeur en continu et generateur de vapeur en continu

Also Published As

Publication number Publication date
JPS4936445B1 (fr) 1974-10-01
DK127582B (da) 1973-12-03
GB1329423A (en) 1973-09-05
FI50738C (fi) 1976-06-10
BE759112A (fr) 1971-04-30
SE360455C (fr) 1975-10-06
SE360455B (fr) 1973-09-24
NL7016887A (fr) 1971-05-21
FR2069531A5 (fr) 1971-09-03
FI50738B (fr) 1976-03-01
ES385617A1 (es) 1974-02-01

Similar Documents

Publication Publication Date Title
US3656515A (en) Shaped tube
US5878940A (en) Method of fabricating sheet metal structures by welding and structure formed thereby
US1980561A (en) Welded joint
GB1259332A (fr)
RU2740692C1 (ru) Элемент теплообменника и способ изготовления элемента теплообменника
US3807024A (en) Method of replacing a damaged tube in a tube wall
US3608181A (en) Fabrication of panel walls
US3733686A (en) Method for welding titanium clad steel
US3185815A (en) Welded structure and method for making same
WO2011089909A1 (fr) Tube à double paroi, procédé de fabrication de tube à double paroi et générateur de vapeur
US3473215A (en) Welding of tubes to tube plates
GB1234940A (en) Blade ring assemblies
US3848314A (en) An assembly of substantially parallel metallic surfaces
US4410487A (en) Core baffle or enclosure and method of fabricating the same
JP5237401B2 (ja) Ｈ形鋼の溶接接合方法
US3680584A (en) Welding construction for multilayered devices
US2028233A (en) Welding
US1791064A (en) Joseph bradley murray
US4020971A (en) Method of and arrangement for sealing the joints between the parts of a multi-part housing
US2011719A (en) Arc welding method
US3527917A (en) Method of electron beam welding on thick metal sheets
JPH0140714B2 (fr)
US3252511A (en) Tube walls
USRE37144E1 (en) Above-ground fire-resistant storage tank system and fabrication method
US3401253A (en) Method of and apparatus for metallurgically joining materials